25. In mainly which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen? A.Annelida B.Chordata C.Arthropods D.Echinodermata
Answer: Option C Solution: Class Insecta is the largest group of arthropods and includes mainly terrestrial arthropods with a distinct head, thorax and abdomen, one pair of antennae, three pairs of legs, jaws and up to two pairs of wings. This group includes most of the familiar creatures affectionately known as "bugs".
